Commit 45beb31d authored Jul 28, 2020 by Kai-Heng Feng Committed by Bjorn Helgaas Jul 29, 2020

PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken

We are seeing AMD Radeon Pro W5700 doesn't work when IOMMU is enabled:

iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01a0]
iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01c0]

The error also makes graphics driver fail to probe the device.

It appears to be the same issue as commit 5e89cd30 ("PCI: Mark AMD
Navi14 GPU rev 0xc5 ATS as broken") addresses, and indeed the same ATS
quirk can workaround the issue.

See-also: 5e89cd30 ("PCI: Mark AMD Navi14 GPU rev 0xc5 ATS as broken")
See-also: d28ca864 ("PCI: Mark AMD Stoney Radeon R7 GPU ATS as broken")
See-also: 9b44b0b0 ("PCI: Mark AMD Stoney GPU ATS as broken")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=208725
Link: https://lore.kernel.org/r/20200728104554.28927-1-kai.heng.feng@canonical.com

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

parent 3f9a7a13

drivers/pci/quirks.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -5192,7 +5192,8 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
		*/
		static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
		{
		if (pdev->device == 0x7340 && pdev->revision != 0xc5)
		if ((pdev->device == 0x7312 && pdev->revision != 0x00) \|\|
		(pdev->device == 0x7340 && pdev->revision != 0xc5))
		return;

		pci_info(pdev, "disabling ATS\n");
		@@ -5203,6 +5204,8 @@ static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
		/* AMD Iceland dGPU */
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
		/* AMD Navi10 dGPU */
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
		/* AMD Navi14 dGPU */
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
		#endif /* CONFIG_PCI_ATS */